I only see that you would need to teach children as they grow the real meaning behind the holiday.. same with Christmas..

and even if you do not belive in Christ why not go along with it if it brings a smile on a child?

But why lie to them, and later tell them the truth?

I for one don't want my kid to celebrate a lie, regardless of if it makes them smile. They can smile just as big celebrating the real deal. "Guess what little Timmy, you don't have to die in your sins because Jesus did it for you. No Timmy, you are not getting a chocolate rabbit." See.. why would that not put a smile on a kid?